helps to prevent neural tube defects in the baby. But not having taken Folic Acid does not mean that your baby will have this problem. Iron
helps to prevent you from having anemia
. Don't try to make up for pills you didn't take earlier in pregnancy
by taking a whole bunch now. Just be honest with your obstetrician. I would take these supplements/ vitamins as prescribed for the remainder of your pregnancy. I hope that your delivery goes well and that you have a healthy baby.